Brick-mold



ATENT JOSEPH BLUM, OF CHICAGO, ILLINOIS.

BRICK- MOLD.

SPEOIFICATION forming part of Letters Patent No. 266,602, dated October31, 1882.

(No model.)

To all whom it may concern:

Be it known that I, JOSEPH BLUM, of Ohicago, in the county of Cook andState of Illinois, have invented certain new and useful Improvements inBrick-Molds, of which the following, in connection with the accompanyingdrawings, is a specification.

In thedrawings,Figure lis atop or plan view of a brickm0ld embodying myinvention. Fig. 2 is a section in the plane of the line 0c 00 of Fig. 1,viewed in the direction indicated by the arrow there shown. Fig. 3 is asection in the plane of the line 9 y of Fig. 1, viewed in the directionindicated by the arrow there shown; and Fig. 4 is an end view of themold.

Like letters of reference indicate like parts.

A represents the frame of the mold. This frame consists of the sidepieces, a a, and of the end pieces a a, rigidly attached to the sidepieces; also, in molds wide enough to receive four or more bricks, Iemploy a central piece, a, which constitutes a part of the frame, andwhich is rigidly fastened to the end pieces. The pieces a a are cutaway, as shown at b b, to facilitate handling, and the pieces a a arearranged somewhat above the lower edges of the pieces a a, as shown inFigs. 2 and 4.

B B are the bottoms of the mold-compartments. These bottom pieces areadapted to be moved up and down between the sides of themold-compartments, and are suspended from the end pieces a a by means offlexible connections c c.

O G are the ends of the mold-compartments, and consist of plates hingedat their lower edges to the bottoms B B, as indicated at d d, and attheir upper edges to a vertically-vibrating link, 0, hinged to the frameA.

When two or more pieces B B are employed I connect them together rigidlyat the ends by means of connecting plates or pieces B" B, the ends ofthe piece a being cut away, as shown at f f, to permit theseconnecting-pieces to move as the bottoms are moved; also, to

prevent the bottoms from swaying endwise I connect them by means of aguide rod or bar, B, passing either through a vertical slot, D, in thepiece a or between guide bars or rods 9 9, located in the said piece.

In order to provide the mold-compartments U with a canvas lining foradapting them for bricks intended to be molded without sand, I make afalse bottom, h, and false ends h h, the latter beinglinked or hinged attheir lower edges to the false bottoms, and these parts I cover withcanvas h. These false bottoms and ends I then apply to the bottoms B Band ends 0 O in any suitable way, as indicated at t in Fig. 2.

To use this mold I proceed as follows, it being understood that it hasfirst been filled in the usual or in any well-known way, and that theclay so molded is to be carried away and discharged upon a drying bed oryard. To discharge the clay, I turn the mold over carefully upon thedrying bed,as usual, then, holding to the side pieces, a a, and pressingupon the bot tom pieces B B, I draw the frame up from the brick, whilethe bottom pieces remain stationary until the bricks are completelyloosened from the mold, when I lift the mold up and wholly from thebricks, which are left to dry. In practice, therefore, the frame A isdrawn up with respect to the bottom pieces, B B; but when the mold isturned over to receive a new load the bottoms drop to their properplaces. The act of drawing up the frame in this manner results intilting the end pieces a a away from the ends of the bricks, and thepressure of the bottoms B B upon the bottoms of the bricks causes thebricks to he pushed from the molds and prevents the bricks from losingtheir proper form also, by this means the corners and edges of the greenbricks will not be injured.

I am aware that brick-molds have heretofore been constructed withvertically-movable mold-bottoms, and with tilting ends in themold-compartment. I do not therefore here intend to claim the same,broadly; but

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

The combination, in a brick-mold, of the frame A, consisting of the sidepieces, a a, and of the end pieces a a, rigidly attached to the sidepieces, the bottoms B B, fitting loosely in the said frame, andsuspended therefrom by mesinsof flexible connections, permitting thesides of the frame serve as sides for the moldbottoms to be movedvertically in the frame, compartments, substantially as and forthepurthe end pieces (J O, hinged at thcirlower edges pose specified.

to the bottoms B B and at their upper ends JOSEPH BLUM. 5 t0 the frameA, the Whole constituting a brick- Witnesses:

mold havingvertically-movable mold-bottoms, F. F. WARNER,

tilting expansible end pieces, and in which the H. FRANKFURTER.

